CN102096528A - Touch input device and touch input method - Google Patents

Abstract

Translated fromChinese

一种触摸输入装置包括一触摸笔及一输入面板。该触摸笔设置有光源用来发出光线。该输入面板包括一触摸输入区域，第一小孔、第二小孔以及分别与该第一及第二小孔相对应的第一及第二影像获取单元，其中该第一及第二小孔分别设置于该输入面板相邻的两侧，该影像单元分别设置于该相邻两侧上与该小孔相对应的位置。该触摸笔发出的光线透过该第一及第二小孔分别在该第一及第二影像获取单元上形成投影，该触摸输入装置通过该投影的位置坐标计算该触摸笔位置的坐标，从而确定该触摸笔的位置及移动轨迹。本发明还提供了一种触摸输入方法。本发明中的触摸输入装置结构简单，方便使用，且不受电磁干扰的影响。

A touch input device includes a touch pen and an input panel. The touch pen is provided with a light source for emitting light. The input panel includes a touch input area, a first small hole, a second small hole, and first and second image acquisition units respectively corresponding to the first and second small holes, wherein the first and second small holes They are respectively arranged on two adjacent sides of the input panel, and the image units are respectively arranged at positions corresponding to the small holes on the adjacent two sides. The light emitted by the touch pen passes through the first and second small holes to form projections on the first and second image acquisition units respectively, and the touch input device calculates the coordinates of the position of the touch pen through the projected position coordinates, thereby Determine the position and movement track of the touch pen. The invention also provides a touch input method. The touch input device in the present invention has a simple structure, is convenient to use, and is not affected by electromagnetic interference.

Description

Touch input device and touch inputting method

Technical field

The present invention relates to a kind of touch input device and touch inputting method, relate in particular to a kind of optical touch input media and touch inputting method.

Background technology

Present literal input mode mainly contains keyboard input, phonetic entry and touch pad input etc.Wherein touch input device generally comprises a felt pen and a touch panel, and touch input device generally has following several types at present: resistance-type, condenser type, and induction etc.In resistance or capacitance touch input media, a plurality of electric capacity or resistance are set in this touch pad, this felt pen can be any object that can change electric capacity or resistance, for example metal bar or plastic rod.Yet, when certain or some electric capacity on the substrate or resistance damage, touch input and just mistake can occur, thereby influence serviceable life, brought inconvenience to the user simultaneously.In the induction touch input device, one layer circuit board is arranged below the touch pad, can above touch pad, produce magnetic field in the certain limit, the circuit that can produce magnetic field is also arranged in felt pen, this technology fluent writing, but this kind mode is subjected to the electromagnetic interference (EMI) of external environment easily, for example, almost can not work aside the time as mobile phone speaker.

Summary of the invention

In view of this, the invention provides a kind of touch input device to address the above problem.

Touch input device among the present invention comprises a felt pen and an input panel.This felt pen is provided with light source and is used for emitting beam.This input panel comprises that one touches input area, first aperture, second aperture, the first image acquiring unit and the second image acquiring unit, wherein this first and second aperture is arranged at the adjacent both sides of this input panel respectively, this first and second image acquiring unit is located at these adjacent both sides and the corresponding position of aperture respectively, and the light that makes this felt pen send sees through this first and second aperture and forms projection respectively on this first and second image acquiring unit; The also corresponding X-Y coordinate system of this input panel, this first and second aperture are respectively to the coordinate in should coordinate system.This touch input device also comprises a processing unit, first and second image acquiring unit of this processing unit and this is connected, the angle α that this processing unit calculates this felt pen and the first aperture line and X-direction respectively in the position and the distance between image acquiring unit and the respective apertures of projection on first and second image acquiring unit respectively according to first and second aperture, and the angle β of felt pen and the second aperture line and Y direction, and determine first straight line through touch location according to the coordinate of first aperture and angle α respectively, and determine second straight line through touch location according to the coordinate of second aperture and angle β, thereby determine the intersecting point coordinate of this first straight line and second straight line, this intersecting point coordinate is this felt pen at the coordinate that touches input area institute touch location, thereby determines the position and the motion track of this felt pen by this felt pen position coordinates of continuous detecting.

The present invention also provides a kind of touch inputting method, and this method comprises the steps: that the light that felt pen sends sees through the projection on first and second image acquiring unit respectively of first and second aperture; Determine the projected position on the first image acquiring unit, and go out the line (calling first straight line in the following text) of this felt pen position and aperture and the angle of horizontal direction according to the distance calculation of this projected position and first aperture and the first image acquiring unit; Determine the coordinate set of this first straight line according to the angle of the first aperture position coordinate and first straight line and horizontal direction; Determine the position of this projection on the second image acquiring unit, and go out the angle of line (to call second straight line in the following text) and vertical direction between the felt pen position and second aperture according to the distance calculation of the position of this projection and second aperture and the second image acquiring unit; Determine the coordinate set of this second straight line according to the angle of this second aperture coordinate and second straight line and vertical direction; Determine a public coordinate points according to the coordinate set of first straight line and second straight line, be the coordinate of felt pen institute position of touch; Detect the position coordinates of this felt pen continuously, thereby determine the motion track of this felt pen.

Touch input device among the present invention is simple in structure, the convenient use, and be not subjected to the influence of electromagnetic interference (EMI).

Description of drawings

Fig. 1 is a touch input device synoptic diagram in an embodiment of the present invention.

Fig. 2 is this touch input device high-level schematic functional block diagram in an embodiment of the present invention.

Fig. 3 is that touch input device calculates principle explanation synoptic diagram in an embodiment of the present invention.

Fig. 4 is a touch inputting method process flow diagram in an embodiment of the present invention.

The main element symbol description

Touch input device	100
		Felt pen	10
Light source	101
		Input panel	20
Touch input area	201
		First aperture	202
Second aperture	203
		The firstimage acquiring unit	204
The secondimage acquiring unit	205
		Processing unit	30
First straight line	L1
		Second straight line	L2

Embodiment

See also Fig. 1 and Fig. 2, thistouch input device 100 comprises a felt pen 10 and an input panel 20.This felt pen 10 is provided with a light source 101, this light source 101 to around launch light.In the present embodiment, this light source 101 is an infrared light supply, is arranged at this felt pen 10 nib places.In other embodiments, this light source 101 is a lasing light emitter.This input panel 20 comprises that one touches input area 201, first aperture 202, second aperture 203, the firstimage acquiring unit 204 and the second image acquiring unit 205.In the present embodiment, this input panel 20 is one to have the rectangular configuration of protruding frame, and this protrusions frame is a hollow structure, touches input area 201 settings around this.This first aperture 202 and second aperture 203 lay respectively on the protrusion frame of 20 liang of adjacent sidewalls of this input panel and aperture direction and its place frame perpendicular, promptly touch input area 201 towards this.

In the present embodiment, this first aperture 202 is positioned on the horizontal sides of this input panel 20, and this second aperture 203 is positioned on the vertical edge of this input panel 20.This firstimage acquiring unit 204 is arranged at the inner position corresponding with first aperture 202 of the protrusion frame of this input panel 20, and with these first aperture, 202 one first preset distance settings at interval, this secondimage acquiring unit 205 is arranged in this protrusion frame the position corresponding with this second aperture 203, and with this second aperture, 203 intervals, one second preset distance, when thereby this felt pen 10 was arranged in this touch input area 201, the light that this felt pen 10 sends can see through this first aperture 202 and the projection on the firstimage acquiring unit 204 and the secondimage acquiring unit 205 respectively of this second aperture 203.Wherein, this first preset distance and this second preset distance can be identical also can be different.When this felt pen 10 touched different positions, the light that this felt pen 10 sends was by the position difference of projection on corresponding image acquiring unit behind the aperture.Thistouch input device 100 also comprises aprocessing unit 30, and thisprocessing unit 30 is electrically connected with this firstimage acquiring unit 204 and the secondimage acquiring unit 205.

In the present embodiment, the tangible point of this touch input area 201 and a coordinate system for example the coordinate in the X-Y coordinate system shine upon one by one.This first aperture 202, second aperture 203 are equally to the coordinate in should the X-Y coordinate system.Thisprocessing unit 30 according to light see through first aperture 202 and second aperture 203 respectively on the firstimage acquiring unit 204 and the secondimage acquiring unit 205 position of projection and the distance between image acquiring unit and the respective apertures calculate the angle α of this felt pen 10 and first aperture, 202 lines and X-direction respectively, and the angle β of felt pen 10 and second aperture, 203 lines and Y direction, and determine first a straight line L1 through first aperture 202 and touch location according to the coordinate and the angle α of first aperture 202 respectively, and determine second a straight line L2 through second aperture 203 and touch location according to the coordinate and the angle β of second aperture 203, thereby determine the intersecting point coordinate of this first straight line L1 and the second straight line L2, this intersecting point coordinate is this felt pen 10 at the coordinate that touches 201 touch locations of input area, thereby thisprocessing unit 30 is determined the position and the motion track of this felt pen 10.

In the present embodiment, thistouch input device 100 also comprises a display panel (not shown), and this display panel is positioned at the top of this input panel 20, and the motion track that thisprocessing unit 30 is also controlled this felt pen 10 is presented on the display panel.In other embodiments, this input panel 20 is a transparent panel, and this display panel is positioned at the below of this input panel 20.

See also Fig. 3, for touching the coordinate synoptic diagram of input panel 20 in the present embodiment.In the present embodiment, if the center with this touch input area 201 is that true origin is set up the X-Y coordinate system, wherein first aperture 202 and the firstimage acquiring unit 204 are positioned on the X-axis, coordinate is respectively (0, a), (0, c), this second aperture 203 and this secondimage acquiring unit 205 are positioned on the Y-axis, coordinate is respectively (b, 0) reach (d, 0), thereby, the distance of this firstimage acquiring unit 204 and first aperture 202 is c-a, and the distance of this secondimage acquiring unit 205 and second aperture 203 is b-d.In the present embodiment, this the firstimage acquiring unit 204 and the secondimage acquiring unit 205 are formed by a plurality of optical inductors of linearly arranging, when the light that sends when felt pen 10 projected to an optical inductor by aperture, this optical inductor produced an induced signal.Optical inductor in this firstimage acquiring unit 204 is parallel to X-axis, and the optical inductor in this secondimage acquiring unit 205 is parallel to Y-axis, all corresponding coordinate figure of each optical inductor in this image acquiring unit 204,205.Wherein the coordinate that is positioned at right-hand optical inductor of Y-axis of the firstimage acquiring unit 204 on the occasion of, the coordinate that is positioned at the optical inductor of Y-axis left is a negative value.This secondimage acquiring unit 205 be positioned at X-axis top optical inductor coordinate on the occasion of, the coordinate that is positioned at the optical inductor of X-axis below is a negative value.

In the present embodiment, the computation process of these felt pen 10 position coordinateses is as follows: the position coordinates of setting this felt pen 10 for (x, y).The light that sends when felt pen 10 passes this first aperture 202 and when projecting to an optical inductor of this firstimage acquiring unit 204, this optical inductor produces an induced signal, determine the coordinate of this optical inductor behindprocessing unit 30 these induced signals of reception, this coordinate is the position of this ray cast on this firstimage acquiring unit 204, be made as (z, and obtain the value of angle α according to the distance c-a of this horizontal ordinate z and the firstimage acquiring unit 204 and first aperture 202 c).Concrete because tan α=(c-a)/z, thereby can obtain α, wherein c-a is an absolute value, when z was negative value, tan α was for negative, when z be on the occasion of the time, tan α is for just.In like manner can try to achieve the angle value of angle β.Thereby thisprocessing unit 30 can determine that according to the angle α of the coordinate of this first aperture 202 and this this first straight line L1 and horizontal direction the coordinate set of this first straight line L1 is for satisfying all coordinates of equation y=tan α (x+a).In like manner, thisprocessing unit 30 determines that according to the coordinate of second aperture 203 and the angle β of this second straight line L2 and vertical direction the coordinate set of this second straight line L2 is for satisfying all coordinates of EQUATION x=tan β (y+b).Thisprocessing unit 30 is determined this public coordinate points by the coordinate set of this first straight line L1 of contrast and the second straight line L2, promptly draws the coordinate of 10 position of touch of this felt pen.Thisprocessing unit 30 draws the deformation trace of this felt pen 10 by detecting the coordinate of 10 position of touch of this felt pen continuously.

See also Fig. 4, the touch inputting method in thistouch input device 100 comprises the steps:

Step S301: this felt pen 10 with light source is put the light that produces when touching and is produced projection respectively on the firstimage acquiring unit 204 and the secondimage acquiring unit 205 through first aperture 202 and second aperture 203 on input panel 20.

Step S302: determine the position of this subpoint on the firstimage acquiring unit 204, and go out the angle of line (to call the first straight line L1 in the following text) and horizontal direction between felt pen 10 positions and first aperture 202 according to the distance calculation of the position of this subpoint and first aperture 202 and the firstimage acquiring unit 204.

Step S303: the coordinate set of determining this first straight line L1 according to the angle of these first aperture, 202 coordinates and the first straight line L1 and horizontal direction.

Step S304: determine the position of this subpoint on the secondimage acquiring unit 205, and go out the angle of line (to call the second straight line L2 in the following text) and vertical direction between felt pen 10 positions and second aperture 203 according to the distance calculation of the position of this subpoint and second aperture 203 and the secondimage acquiring unit 205.

Step S305: the coordinate set of determining this second straight line L1 according to the angle of these second aperture, 203 coordinates and the second straight line L1 and vertical direction;

Step S306: determine a public coordinate points according to the coordinate set of the first straight line L1 and the second straight line L2, be the coordinate of 10 position of touch of felt pen;

Step S307: detect the position coordinates of this felt pen 10 continuously, thereby determine the motion track of this felt pen 10.

Claims (9)

Translated fromChinese

1.一种触摸输入装置，包括一触摸笔及一输入面板及，其特征在于：1. A touch input device, comprising a touch pen and an input panel and, is characterized in that:该触摸笔设置有光源用于发出光线；The touch pen is provided with a light source for emitting light;该输入面板包括一触摸输入区域、第一小孔、第二小孔、第一影像获取单元及第二影像获取单元，其中该第一及第二小孔分别设置于该输入面板相邻的两侧，该第一及第二影像获取单元分别设于该相邻两侧与小孔相对应的位置，使得该触摸笔发出的光线透过该第一及第二小孔分别在该第一及第二影像获取单元上形成投影；该输入面板还对应一X-Y坐标系，该第一及第二小孔分别对应该坐标系中的一坐标；The input panel includes a touch input area, a first small hole, a second small hole, a first image acquisition unit and a second image acquisition unit, wherein the first and second small holes are respectively arranged on two adjacent sides of the input panel. side, the first and second image acquisition units are respectively arranged at positions corresponding to the small holes on the adjacent two sides, so that the light emitted by the touch pen passes through the first and second small holes and passes through the first and second small holes respectively. A projection is formed on the second image acquisition unit; the input panel also corresponds to an X-Y coordinate system, and the first and second small holes correspond to a coordinate in the coordinate system;该触摸输入装置还包括一处理单元，该处理单元与该第一及第二影像获取单元连接，该处理单元根据第一及第二小孔分别在第一及第二影像获取单元上投影的位置以及影像获取单元与对应小孔之间的距离分别计算出该触摸笔与第一小孔连线和X轴方向的夹角α，以及触摸笔与第二小孔连线和Y轴方向的夹角β，并分别根据第一小孔的坐标以及夹角α确定一经过触摸位置的第一直线，以及根据第二小孔的坐标以及夹角β确定一经过触摸位置的第二直线，从而确定该第一直线以及第二直线的交点坐标，该交点坐标即为该触摸笔在触摸输入区域所触摸位置的坐标，通过连续侦测该触摸笔位置坐标从而确定该触摸笔的位置及移动轨迹。The touch input device also includes a processing unit, which is connected to the first and second image acquisition units, and the processing unit is configured according to the projected positions of the first and second small holes on the first and second image acquisition units, respectively. and the distance between the image acquisition unit and the corresponding small hole, respectively calculate the angle α between the line connecting the touch pen and the first small hole and the X-axis direction, and the angle α between the line connecting the touch pen and the second small hole and the Y-axis direction. Angle β, and determine a first straight line passing through the touch position according to the coordinates of the first small hole and the included angle α, and determine a second straight line passing through the touched position according to the coordinates of the second small hole and the included angle β, so that Determine the intersection coordinates of the first straight line and the second straight line, the intersection coordinates are the coordinates of the position touched by the touch pen in the touch input area, and determine the position and movement of the touch pen by continuously detecting the position coordinates of the touch pen track.2.如权利要求1所述的触摸输入装置，其特征在于，该触摸笔的光源设置于笔尖处。2 . The touch input device according to claim 1 , wherein the light source of the touch pen is disposed at the tip of the pen.3.如权利要求2所述的触摸输入装置，其特征在于，该触摸笔上的光源为红外光源。3. The touch input device according to claim 2, wherein the light source on the touch pen is an infrared light source.4.如权利要求2所述的触摸输入装置，其特征在于，该触摸笔上的光源为激光源。4. The touch input device according to claim 2, wherein the light source on the touch pen is a laser source.5.如权利要求1所述的触摸输入装置，其特征在于，该触摸输入面板包括一凸出边框，该凸出边框为中空结构，该第一、第二小孔分别设置于该触摸输入面板的凸出边上，该第一、第二影像获取单元分别设置于该凸出边框内部，与该第一、第二小孔分别对应的位置。5. The touch input device according to claim 1, wherein the touch input panel comprises a protruding frame, the protruding frame is a hollow structure, and the first and second small holes are respectively arranged on the touch input panel On the protruding side of the protruding frame, the first and second image acquisition units are respectively arranged inside the protruding frame at positions corresponding to the first and second small holes respectively.6.如权利要求1所述的触摸输入装置，其特征在于，该影像获取单元由多个呈直线排布的光感应器构成，该影像获取单元中的每个光感应器分别对应一坐标系中的一坐标值，当触摸笔发出的光线通过小孔投影到一光感应器时，该光感应器产生一感应信号，该处理单元接收该感应信号后确定该产生感应信号的光感应器的坐标，从而确定该光线在该影像获取单元上的投影位置。6. The touch input device according to claim 1, wherein the image acquisition unit is composed of a plurality of light sensors arranged in a straight line, and each light sensor in the image acquisition unit corresponds to a coordinate system When the light emitted by the touch pen is projected onto a light sensor through the small hole, the light sensor generates a sensing signal, and the processing unit determines the value of the light sensor that generates the sensing signal after receiving the sensing signal coordinates, so as to determine the projection position of the light on the image acquisition unit.7.如权利要求1所述的触摸输入装置，其特征在于，该触摸输入装置为一电子画板，该处理单元确定触摸笔所触控位置后，控制用户的输入轨迹可显示在该电子画板的触摸输入面板上。7. The touch input device according to claim 1, wherein the touch input device is an electronic drawing board, and after the processing unit determines the touch position of the touch pen, the control user's input track can be displayed on the electronic drawing board. Touch the input panel.8.一种触摸输入方法，应用于一种触摸输入装置，该触摸输入装置包括一触摸笔及一触摸输入面板，该触摸笔上设置有光源以发出光线，该触摸输入面板相邻两侧分别设置有第一小孔，第二小孔，分别与第一及第二小孔对应的第一及第二影像获取单元，以及一处理单元与该第一及第二影像获取单元相连接，该输入面板还对应一X-Y坐标系，该第一及第二小孔分别对应该坐标系中的一坐标，其特征在于，该触摸输入方法包括如下步骤：8. A touch input method, applied to a touch input device, the touch input device includes a touch pen and a touch input panel, the touch pen is provided with a light source to emit light, the adjacent two sides of the touch input panel are respectively A first small hole, a second small hole, first and second image acquisition units respectively corresponding to the first and second small holes, and a processing unit connected to the first and second image acquisition units are provided. The input panel also corresponds to an X-Y coordinate system, and the first and second small holes respectively correspond to a coordinate in the coordinate system. It is characterized in that the touch input method includes the following steps:触摸笔发出的光线透过第一及第二小孔分别在第一及第二影像获取单元上投影；The light emitted by the touch pen is projected on the first and second image acquisition units respectively through the first and second small holes;确定在第一影像获取单元上的投影位置，并根据该投影位置以及第一小孔与第一影像获取单元的距离计算出该触摸笔所在位置与小孔的第一连线与水平方向的夹角；Determine the projection position on the first image acquisition unit, and calculate the distance between the position of the touch pen and the first connection line between the small hole and the horizontal direction according to the projection position and the distance between the first small hole and the first image acquisition unit. horn;根据第一小孔位置坐标以及第一连线与水平方向的夹角确定该第一连线的坐标集合；determining the coordinate set of the first connection line according to the position coordinates of the first small hole and the angle between the first connection line and the horizontal direction;确定该在第二影像获取单元上的投影的位置，并根据该投影的位置以及第二小孔与第二影像获取单元的距离计算出触摸笔所在位置与第二小孔之间的第二连线与竖直方向的夹角；Determine the position of the projection on the second image acquisition unit, and calculate the second connection between the position of the touch pen and the second small hole according to the projected position and the distance between the second small hole and the second image acquisition unit. The angle between the line and the vertical direction;根据该第二小孔坐标以及第二连线与竖直方向的夹角确定该第二连线的坐标集合；determining the coordinate set of the second connection line according to the coordinates of the second small hole and the angle between the second connection line and the vertical direction;根据第一连线与第二连线的坐标集合确定一公共坐标点，即为触摸笔所触控位置的坐标；Determine a common coordinate point according to the coordinate set of the first connection line and the second connection line, which is the coordinate of the touch position of the touch pen;连续侦测该触摸笔的位置坐标，从而确定该触摸笔的移动轨迹。Continuously detect the position coordinates of the touch pen, so as to determine the movement track of the touch pen.9.如权利要求8所述的触摸输入方法，其特征在于，应用该触摸输入方法的触摸输入装置中，该影像获取单元由多个呈直线排布的光感应器构成，该影像获取单元中的每个光感应器分别对应该坐标系中的一坐标值，当触摸笔发出的光线通过小孔投影到一光感应器时，该光感应器产生一感应信号，该处理单元接收该感应信号后确定该产生感应信号的光感应器的坐标，从而确定该光线在该影像获取单元上的投影位置。9. The touch input method according to claim 8, wherein in the touch input device using the touch input method, the image acquisition unit is composed of a plurality of light sensors arranged in a line, and the image acquisition unit Each light sensor of the sensor corresponds to a coordinate value in the coordinate system. When the light emitted by the touch pen is projected onto a light sensor through a small hole, the light sensor generates a sensing signal, and the processing unit receives the sensing signal Then determine the coordinates of the light sensor that generates the sensing signal, so as to determine the projection position of the light on the image acquisition unit.

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